Usually, with open-grid benchwork, the technique for making a bridge is: Plan the location ahead of time, and make that grid section lower.I was wondering, how would be the easiest way to create a overpass or bridge scene with the type of benchwork i have? My benchwork is constructed of 1" x 4" open grid tables on 16" centers, topped with 1/4" plywood with 1" extruded foam on top of that.